Behavior of Leaf Meristems and Their Modification.
Behavior of Leaf Meristems and Their Modification.
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DOI：
10.3389/fpls.2015.01060
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发表时间：
2015
影响因子：
5.6
通讯作者：
Tsukaya H
中科院分区：
文献类型：
--
作者：
Ichihashi Y;Tsukaya H
开花植物形态多样性的一个主要来源是叶片形状和大小的广泛变异性。叶片的形成是由茎顶端分生组织(SAM)两侧的少数细胞发育成复杂的三维结构来启动的。叶的器官发生依赖于几个不同的分生组织的活动，这些分生组织在叶原基形成后形成并在时空上分化。在这里，我们回顾了最近在基因调控网络中的发现，该网络协调了模式植物拟南芥的叶分生组织活动。然后，我们讨论了最近研究叶片形态自然变异的关键研究，以了解基因调控网络如何在进化过程中调节叶片分生组织以产生大量多样性的叶片。
A major source of diversity in flowering plant form is the extensive variability of leaf shape and size. Leaf formation is initiated by recruitment of a handful of cells flanking the shoot apical meristem (SAM) to develop into a complex three-dimensional structure. Leaf organogenesis depends on activities of several distinct meristems that are established and spatiotemporally differentiated after the initiation of leaf primordia. Here, we review recent findings in the gene regulatory networks that orchestrate leaf meristem activities in a model plant Arabidopsis thaliana. We then discuss recent key studies investigating the natural variation in leaf morphology to understand how the gene regulatory networks modulate leaf meristems to yield a substantial diversity of leaf forms during the course of evolution.